Electronics and Telecommunications Research Institute

Lg Chem, Ltd

Korea Institute of Energy Research

Lg Hausys, Ltd.

Seung Yong Lee

Gwang Ja Jin

Byung Tae Jang

Hyung Joo Kim

Jin Kyu Choi

Dae Seung Yoo

Wan Gyun Choi

Bu Gon Shin

Chun Ho Park

Jong-Hyun Park

Jong Hun Lee

Ji Hoon Choi

Soo Min Lee

Young Cheol Park

Kyung Yeon Kang

Hyun Joon Kang

Jin Mi Jung

Bu Won Son

Se Hyun Kim

Cheol Won Lee

Tae Joo Chang

Og Sin Kim

Dong Sun Lim

Myeong Ryeol Choi

Kyong Ha Lee

Kwang Woo Yoon

Inhak Joo

Yu Jin Jeong

Jeong-Ho Park

Si Hyun Lee

Do Won Shun

Dal Hee Bae

Yon Jee Kim

Jae Jung Yoo

Sung Ho Cho

Chang Keun Yi

Gyong Tae Jin

Kyong Hee Lee

Seong Baek Kim

Kyoung Ho Choi

Ho Jung Ryu

Jae Hyeon Park

Seok Won Kim

Seung Jei Yang

Nam Deok Cho

In the present invention, only low-growth carbon nanotubes are selectively separated among solid particles discharged during a reaction and then re-input to a reactor, so that it is possible to improve the quality of a carbon nanotube product to be produced and the productivity of a carbon nanotube production process.

System and method for producing carbon nanotubes

A joining material for laser welding, a laser welding method using the same, and a laser joined body using the laser welding method. The joining material includes a polymer matrix and a needle-shaped inorganic filler. The polymer matrix includes a polypropylene resin having a melt index of 80 g/10 min or more to 95 g/10 min or less as measured at a temperature of 230&#xb0; C. and a load of 2.16 kg, and the needle-shaped inorganic filler has an aspect ratio of 10:1 to 20:1.

Joining material for laser welding and laser welding method using the same

The present invention relates to a method for preparing a carbon nanotube dispersion, the method including mixing a dispersion solution including a dispersion solvent and a dispersant with carbon nanotubes to prepare carbon nanotube paste, extruding the paste to obtain solid carbon nanotubes, and introducing a second solvent to the solid carbon nanotubes, and homogenizing the carbon nanotubes, wherein the weight ratio of the dispersion solution and the carbon nanotubes is 1:1 to 9:1. According to the present invention, the mixing of a dispersant and carbon nanotubes is increased and the particle size is controlled by a wet method, so that a carbon nanotube dispersion having a viscosity controlled to a low level, excellent resistance properties, and a high concentration, may be provided.

Method for preparing carbon nanotube dispersion

Provided is a system for tracking locations of workers. In the system, a first mobile terminal of a first worker located in a coverage area of an anchor node may perform wireless communication with the anchor node to operate in a tracking mode of tracking a location of the first worker, and a second mobile terminal of a second worker located outside the coverage area of the anchor node may perform wireless communication with the first mobile terminal entering a virtual perimeter to track a location of the second worker.

System and method for tracking location of worker

A multi-hop relay maritime communication apparatus installed in a ship is disclosed. The maritime communication apparatus includes a first access module configured to comprise a plurality of directional antennas integrally formed; a second access module configured to comprise an omni-directional antenna; and a bridge configured to be connected to the first access module and the second access module via an Ethernet interface.

Multi-hop relay maritime communication apparatus

The present invention relates to an apparatus and method of performing wireless communication using multiple directional antennas. The transportation means according to the present invention includes at least two communication devices, wherein one of the at least two communication devices, communication device A, includes a directional antenna group, and the other communication device, communication device B, includes a directional antenna group, and wherein the communication device A performs directional antenna selection control of the directional antenna groupincluded in the communication device A depending on whether the communication device B is connected with a network. According to the present invention, one of the communication devices gains access to a satellite station, a base station, or other ships, at least one antenna of another communication device may be used to relay wireless communication and may play a role as a base station or an AP.

Method and apparatus of wireless communication by using multiple directional antennas

An apparatus for drying particles in a fluidized state includes a particle input segment into which wet particles are input, a drying segment having a multi-perforated plate dividing an inner space of the drying segment into an upper section and a lower section, a plurality of upper partition plates partitioning the upper section and positioned above the multi-perforated plate, a plurality of lower partition plates in the lower section respectively corresponding to the plurality of upper partition plates, a plurality of pairs of channel plates in the lower section that pass through the multi-perforated plate such that each pair of the plurality of pairs of channel plates are respectively arranged on opposite sides of respective ones of the plurality of upper partition plates and on opposite sides of respective ones of the plurality of lower partition plates; and a heated-air flow supply segment for supplying hot gas to the drying segment.

Fluidized bed drying apparatus

A terminal discriminating apparatus and a terminal discriminating method using the same are provided. The terminal discriminating apparatus includes: a measurement unit for measuring a pull-up voltage and a pull-down voltage of each of candidate terminals to be discriminated; a discriminating unit for comparing the pull-up voltages, pull-down voltages, and the differences between the pull-up voltages and pull-down voltages for the candidate terminals to discriminate the types of the candidate terminals; and an output unit for outputting results of the discrimination of the candidate terminals transferred from the discriminating unit. The types of the candidate terminals can be discriminated by comparing the pull-up voltage, the pull-down voltage, and the differences between the pull-up voltages and the pull-down voltages for the candidate terminals.

Terminal discriminating apparatus and terminal discriminating method using the same

A vessel block arranging device extracts image information on a vessel block loaded on a transporter, and determines whether to arrange the vessel block in an area in which the vessel block will be arranged by using location information of the arranged vessel block in the area and extracted image information, thereby reducing errors caused by determining the vessel block arrangement.

Device and method for arranging block of vessel

The present invention relates to a radio frequency identification (RFID) tag installation system using a vehicle and method thereof. The REID tag is installed on the road to provide a driver with position information and road information such as speed limit, road name. etc in his or her traveling region. By using our present invention, RFID tag can be installed with small manpower in a short time. The system uses two CCD cameras, two GPS receivers, an INS and a DMI, and includes: a vehicle position and yaw extractor by using the two GPS receivers; orientation extractor for the vehicle by using INS, a GPS/INS/DMI integrator for GPS outage and for INS error correction; two cameras interior/exterior orientation extractor for the CCD cameras; a target position extractor for finding 3-dimensional coordinates; a road information storage for supplying road information such as a speed limit and a route number of a road; an REID tag writer for inputting the information obtained from the target region position extractor and the road information storage; and an REID tag installer for attaching the REID tag on the road.

RFID tag installation system using a vehicle and a method thereof

Growing community of inventors

Daejeon, South Korea

Seung Yong Lee